Further advancements for large area-detector based computed tomography system

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We present advancements made to a large area-detector based system for industrial x-ray computed tomography. Past performance improvements in data acquisition speeds were made by use of high-resolution large area, flat-panel amorphous-silicon (a-Si) detectors. The detectors have proven, over several years, to be a robust alternative to CCD-optics and image intensifier CT systems. These detectors also provide the advantage of area detection as compared with the single slice geometry of linear array systems. New advancements in this system include parallel processing of sinogram reconstructions, improved visualization software and migration to frame-rate a-Si detectors. Parallel processing provides significant speed improvements for ... continued below

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5 p.

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Davis, A. W. (Anthony W.); Keating, S. C. (Scott C.) & Claytor, T. N. (Thomas N.) January 1, 2001.

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Description

We present advancements made to a large area-detector based system for industrial x-ray computed tomography. Past performance improvements in data acquisition speeds were made by use of high-resolution large area, flat-panel amorphous-silicon (a-Si) detectors. The detectors have proven, over several years, to be a robust alternative to CCD-optics and image intensifier CT systems. These detectors also provide the advantage of area detection as compared with the single slice geometry of linear array systems. New advancements in this system include parallel processing of sinogram reconstructions, improved visualization software and migration to frame-rate a-Si detectors. Parallel processing provides significant speed improvements for data reconstruction, and is implemented for parallel-beam, fan-beam and Feldkamp cone-beam reconstruction algorithms. Reconstruction times are reduced by an order of magnitude by use of a cluster of ten or more equal-speed computers. Advancements in data visualization are made through interactive software, which allows interrogation of the full three-dimensional dataset. Inspection examples presented in this paper include an electromechanical device, a nonliving biological specimen and a press-cast plastic specimen. We also present a commonplace item for the benefit of the layperson.

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5 p.

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  • "Submitted to: 7th ASME NDE Topical Conference, San Antonio, Texas, April 23-27, 2001"

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  • Report No.: LA-UR-01-1445
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975270
  • Archival Resource Key: ark:/67531/metadc931732

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 2001

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 11:32 p.m.

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Davis, A. W. (Anthony W.); Keating, S. C. (Scott C.) & Claytor, T. N. (Thomas N.). Further advancements for large area-detector based computed tomography system, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc931732/: accessed November 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.